new medline excel 3000 has a three-position axle and push-button release rear wheelthis top-performing wheelchair has three axle positions for standard, hemi or transport levels. quick-release axles allow easy rear wheel removal. lightweight, scissor-style frame weighs only 26 lbs without wheels. other important features include: strong cast aluminum seat cradles (most competitors use plastic), hand-applied tig welds on key joints for added strength, and a stainless steel ratchet bar on elevated legrest models. the nylon upholstery is more durable - and more comfortable - than vinyl. sealed bearings keep dirt out and stays maintenance-free. durable composite footplates and wheels. 300 lb capacity.limited lifetime warranty on frame and crossframe. one year warranty on upholstery, wheel lock assemblies, wheels, tires, castors, handgrips, legrests, arms, armpads, handrims, quick release, axles, and any other "wearable" parts.